ci2 starts bisection 2025-11-25 17:51:57.569997223 +0000 UTC m=+60454.219102456
bisecting fixing commit since 1257aa4519ee5d49e465b0dcc85cc7e4a24619d5
building syzkaller on ff1712fe925b6acf5dec3cd7616cf03effc97f62
ensuring issue is reproducible on original commit 1257aa4519ee5d49e465b0dcc85cc7e4a24619d5

testing commit 1257aa4519ee5d49e465b0dcc85cc7e4a24619d5 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: 9dba9e3e0bfa560841b83913f36f8df0fc832500f0b06a9fa08b8d186180778d
all runs: crashed: kernel BUG in ext4_alloc_file_blocks
representative crash: kernel BUG in ext4_alloc_file_blocks, types: [BUG]
check whether we can drop unnecessary instrumentation
disabling configs for [atomic_sleep hang memleak ubsan kasan locking], they are not needed
testing commit 1257aa4519ee5d49e465b0dcc85cc7e4a24619d5 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: ad0ad358dee1c95ee61c8bc8160e95be5ba0a56f1d3f93331500db94ae6a0c32
all runs: crashed: kernel BUG in ext4_alloc_file_blocks
representative crash: kernel BUG in ext4_alloc_file_blocks, types: [BUG]
the bug reproduces without the instrumentation
disabling configs for [atomic_sleep hang memleak ubsan kasan locking], they are not needed
kconfig minimization: base=5186 full=6556 leaves diff=265
split chunks (needed=false): <265>
split chunk #0 of len 265 into 5 parts
testing without sub-chunk 1/5
disabling configs for [kasan locking atomic_sleep hang memleak ubsan], they are not needed
testing commit 1257aa4519ee5d49e465b0dcc85cc7e4a24619d5 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: 6df27fdd833e22347d7785c00470a811cc65f1c810199392f37f20853e417850
all runs: crashed: kernel BUG in ext4_alloc_file_blocks
representative crash: kernel BUG in ext4_alloc_file_blocks, types: [BUG]
the chunk can be dropped
testing without sub-chunk 2/5
disabling configs for [hang memleak ubsan kasan locking atomic_sleep], they are not needed
testing commit 1257aa4519ee5d49e465b0dcc85cc7e4a24619d5 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: fa73b9d82551123d8175ac603b940c3382ed28631b204f524511e5019628e898
all runs: crashed: kernel BUG in ext4_alloc_file_blocks
representative crash: kernel BUG in ext4_alloc_file_blocks, types: [BUG]
the chunk can be dropped
testing without sub-chunk 3/5
disabling configs for [hang memleak ubsan kasan locking atomic_sleep], they are not needed
testing commit 1257aa4519ee5d49e465b0dcc85cc7e4a24619d5 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: e4a1402e3466767249e64a548ba3c96c3b848236c987022cc2cdf234117f7f8e
all runs: crashed: kernel BUG in ext4_alloc_file_blocks
representative crash: kernel BUG in ext4_alloc_file_blocks, types: [BUG]
the chunk can be dropped
testing without sub-chunk 4/5
disabling configs for [kasan locking atomic_sleep hang memleak ubsan], they are not needed
testing commit 1257aa4519ee5d49e465b0dcc85cc7e4a24619d5 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: 1b0f379bbcc87b55ac0da08728775c6972d43eea716bdd60015c1e6acefbe0a6
all runs: crashed: kernel BUG in ext4_alloc_file_blocks
representative crash: kernel BUG in ext4_alloc_file_blocks, types: [BUG]
the chunk can be dropped
testing without sub-chunk 5/5
disabling configs for [atomic_sleep hang memleak ubsan kasan locking], they are not needed
testing commit 1257aa4519ee5d49e465b0dcc85cc7e4a24619d5 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
failed building 1257aa4519ee5d49e465b0dcc85cc7e4a24619d5: ld.lld: error: undefined symbol: wext_handle_ioctl
ld.lld: error: undefined symbol: compat_wext_handle_ioctl
ld.lld: error: undefined symbol: wext_proc_init
ld.lld: error: undefined symbol: wext_proc_exit
minimized to 53 configs; suspects: [HID_ZEROPLUS USB_MON USB_NET_CDC_MBIM USB_NET_CDC_SUBSET USB_NET_CDC_SUBSET_ENABLE USB_NET_DM9601 USB_NET_GL620A USB_NET_MCS7830 USB_NET_NET1080 USB_NET_PLUSB USB_NET_RNDIS_HOST USB_NET_SMSC75XX USB_NET_SMSC95XX USB_NET_SR9700 USB_NET_SR9800 USB_NET_ZAURUS USB_OHCI_HCD USB_OHCI_HCD_PCI USB_OHCI_HCD_PLATFORM USB_OTG USB_OTG_FSM USB_PRINTER USB_SERIAL_GENERIC USB_SERIAL_PL2303 USB_STORAGE_ALAUDA USB_STORAGE_CYPRESS_ATACB USB_STORAGE_DATAFAB USB_STORAGE_FREECOM USB_STORAGE_ISD200 USB_STORAGE_JUMPSHOT USB_STORAGE_KARMA USB_STORAGE_ONETOUCH USB_STORAGE_SDDR09 USB_STORAGE_SDDR55 USB_STORAGE_USBAT USB_TRANCEVIBRATOR USB_U_AUDIO USB_U_ETHER USB_U_SERIAL USB_WDM V4L2_ASYNC V4L2_FWNODE VIDEO_CAMERA_SENSOR WLAN WLAN_VENDOR_ATH WLAN_VENDOR_ATMEL WLAN_VENDOR_BROADCOM WLAN_VENDOR_INTERSIL WLAN_VENDOR_MARVELL WLAN_VENDOR_MEDIATEK WLAN_VENDOR_MICROCHIP WLAN_VENDOR_PURELIFI WLAN_VENDOR_RALINK WLAN_VENDOR_REALTEK WLAN_VENDOR_RSI WLAN_VENDOR_SILABS WLAN_VENDOR_ZYDAS ZEROPLUS_FF]
disabling configs for [locking atomic_sleep hang memleak ubsan kasan], they are not needed
testing current HEAD fe2c5b2b1aea5c9c3113c5c36363129e926a6f0b
testing commit fe2c5b2b1aea5c9c3113c5c36363129e926a6f0b gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: 582e681e811c56557d9ac85d8db3d023b40758f73b1e3d75af170af80956bd63
all runs: crashed: kernel BUG in ext4_alloc_file_blocks
representative crash: kernel BUG in ext4_alloc_file_blocks, types: [BUG]
crash still not fixed/happens on the oldest tested release
revisions tested: 7, total time: 2h9m26.825344279s (build: 1h11m25.027280229s, test: 54m30.987392839s)
crash still not fixed or there were kernel test errors
commit msg: UPSTREAM: crypto: essiv - Check ssize for decryption and in-place encryption
crash: kernel BUG in ext4_alloc_file_blocks
------------[ cut here ]------------
kernel BUG at fs/ext4/extents.c:4491!
invalid opcode: 0000 [#1] PREEMPT SMP
CPU: 0 PID: 515 Comm: syz.3.20 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:ext4_alloc_file_blocks+0x307/0x310 fs/ext4/extents.c:4491
Code: c1 f8 1f 21 c3 65 48 8b 04 25 28 00 00 00 48 3b 45 d0 75 11 89 d8 48 83 c4 58 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 a9 06 bc 00 <0f> 0b 0f 1f 80 00 00 00 00 55 48 89 e5 66 90 5d c3 65 8b 05 51 b1
RSP: 0018:ffffc90000bffd00 EFLAGS: 00010246
RAX: abb2f6a177ecf400 RBX: 00000000000007ff RCX: 0000000000008001
RDX: 0000000000000011 RSI: 0000000000000000 RDI: ffff888113eb2a00
RBP: ffffc90000bffd80 R08: 0000000000000003 R09: 0000000000000001
R10: 0000000000000000 R11: 000000000000005a R12: 0000000000000000
R13: 000000000000000b R14: ffff88810d740be8 R15: ffff88810d740be8
FS:  00007f692abff6c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc035fe5000 CR3: 0000000111717000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ext4_zero_range+0x198/0x420 fs/ext4/extents.c:4641
 ext4_fallocate+0x44e/0x960 fs/ext4/extents.c:4776
 vfs_fallocate+0x1b3/0x1d0 fs/open.c:324
 ksys_fallocate fs/open.c:347 [inline]
 __do_sys_fallocate fs/open.c:355 [inline]
 __se_sys_fallocate fs/open.c:353 [inline]
 __x64_sys_fallocate+0x40/0x70 fs/open.c:353
 x64_sys_call+0x7fa/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:286
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f692ad8eec9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f692abff038 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00007f692afe6090 RCX: 00007f692ad8eec9
RDX: 0000000000000002 RSI: 0000000000000010 RDI: 0000000000000004
RBP: 00007f692ae11f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000007fff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f692afe6128 R14: 00007f692afe6090 R15: 00007fff602fa5e8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ext4_alloc_file_blocks+0x307/0x310 fs/ext4/extents.c:4491
Code: c1 f8 1f 21 c3 65 48 8b 04 25 28 00 00 00 48 3b 45 d0 75 11 89 d8 48 83 c4 58 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 a9 06 bc 00 <0f> 0b 0f 1f 80 00 00 00 00 55 48 89 e5 66 90 5d c3 65 8b 05 51 b1
RSP: 0018:ffffc90000bffd00 EFLAGS: 00010246
RAX: abb2f6a177ecf400 RBX: 00000000000007ff RCX: 0000000000008001
RDX: 0000000000000011 RSI: 0000000000000000 RDI: ffff888113eb2a00
RBP: ffffc90000bffd80 R08: 0000000000000003 R09: 0000000000000001
R10: 0000000000000000 R11: 000000000000005a R12: 0000000000000000
R13: 000000000000000b R14: ffff88810d740be8 R15: ffff88810d740be8
FS:  00007f692abff6c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc035fe4000 CR3: 0000000111717000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400